ഒരു ഘനത്തിന്റെ (ക്യൂബ്) വ്യാപ്തം 216 ആണെങ്കിൽ, ഘനത്തിന്റെ ആകെ ഉപരിതല വിസ്തീർണ്ണം കണ്ടെത്തുക.
A121 സെ.മീ²
B216 സെ.മീ²
C360 സെ.മീ²
D144 സെ.മീ²
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